I am using a MacBook Pro (2.4GHz, 2008) and Aperture 3.1 and when I use some of the image presets in the program, it takes an extremely long time for the presets to take effect, I'm talking up to 30 minutes per photograph. Not only that, but it causes the computer to freeze and the colorful spinning wait cursor appears until the photo is done processing. This is the only program that causes me this problem (I also use Adobe Lightroom 4.0, Photoshop CS5, etc.). Are there any measures I can take that will speed this up? Or is it that the MBP is simply outdated for the software?